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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What about the sperm for a bull which has been castrated but still has testicles?






2. Look for infection - split - and rupture of the penis






3. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






4. ~305 days (altough often longer due to breeding difficulties)






5. Allows extension of penis without fibro-elastic penis






6. 1. brain function - 2. blood flow - 3. willing female






7. Superior genes are _______ to multiply






8. Scar tissue plugs up chambers of udder






9. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






10. Important 'landmark' during palpation






11. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






12. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






13. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






14. 4-6 days






15. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






16. The more stressed out the male is - the less sperm he is going to produce






17. (LH) causes female's egg to break (her period)






18. Can survive ~7 days in cow. vast majority <48 hours






19. Milk ~305 days - dry 60 days prior to calving






20. Contains and regulates the temp of the testes for sperm production






21. 1-3 days






22. Why Dairy calves are fed powdered milk.






23. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






24. 114 days






25. Microscopic - make sure not sterile - very few bulls are actually tested






26. What about the sperm for a bull which has been castrated but still has testicles?






27. When are steers and heifers weaned from bottle feeding?






28. (male) pushes the testes outward toward the legs for a cool-down off of the body






29. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






30. What makes the milk flow through the mammary glands?






31. 26 hours after estrus begins






32. Failure to have one testis (gonad) to descend






33. Actual heat cycle (period)






34. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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35. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






36. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






37. Produce testosterone. located between the seminiferous tubules






38. FEED






39. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






40. 45-60 days after breeding; re-breed as required






41. Parturition is controlled by...






42. Larger the cow - more milk is produced; smaller the cow - less milk is produced






43. Provide nourishment for the developing sperm






44. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






45. (switzerland) 2nd in size and milk production - most muscle -






46. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






47. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






48. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






49. (FSH) causes egg to mature in females






50. Sperm production